On Wednesday, 21 October 2015 at 13:53:48 UTC, Marc Schütz wrote:
On Wednesday, 21 October 2015 at 04:49:14 UTC, Shriramana
Sharma wrote:
When renaming `isExpressionsTuple`, I would think it more
appropriate to have "isExpressionSeq" since it's an `AliasSeq`
containing only expressions and no types.
This should not be renamed, because an AliasSeq that consists
only of expressions _is_ a tuple.
Except that it still isn't a tuple even if it only contains
expressions.
We aren't. The only reason we use "AliasSeq" at all instead of
"AliasTuple" was that some people insisted they were not
tuples. This does however not apply to all the other things
that _are_ tuples. Renaming those would only make matters worse.
_Nothing_ which is an AliasSeq is a tuple. What it contains is
irrelevant. The simple fact is that they auto-flatten and are not
composable like tuples are. Calling them tuples has consistently
created confusion.
- Jonathan M Davis
